@article{ref1,
title="Effects of Smoking on Mental and Motor Efficiency",
journal="Psychol Clin",
year="1918",
author="Johnson, Oscar J.",
volume="12",
number="4",
pages="132-140",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}